Method for introducing insulating film and at least one electrical conductor

Abstract

A method for inserting electrical conductors in slots of a component, wherein, in sections, an insulating film has two legs which are connected by a V-shaped or folded tip region. The legs lie against the slot edges such that damage to the electrical conductors by edges of the slot during the insertion thereof into the slots is avoided. The invention further relates to an associated device, to an associated cutting tool, and to an associated use.

The invention claimed is: 
     
       1. A method for introducing a plurality of insulating films and a plurality of electrical conductors into a plurality of slots of a component, which has a sequence of following steps:
 pre-forming each of the plurality of insulating films into sectionally a top-hat shape; 
 inserting each of the insulating films into each of the slots so that respective edges of each of the slots are covered by the insulating film and outward folded portions of the insulating film cover regions of the component between adjacent slots; 
 wherein the insulating films after being inserted into the adjacent slots, the outward folded portions of the insulating films overlap each other so that the outward folded portions allow a plurality of movable guide element to push and grip the outward folded portions firmly against the regions of the component between the adjacent slots; and 
 simultaneously introducing the plurality of the electrical conductors into each of the slots while releasing the movable guide elements against the insulating films to enable the electrical conductors to move further into the respective slots and simultaneously moving each of the insulating films and the electrical conductors to respective end positions; 
 wherein a separate insulating film is introduced into each slot. 
 
     
     
       2. The method according to  claim 1 , wherein, during the step of introducing the insulating film, the insulating film is only introduced into the slot to such an extent that it is at a distance from a bottom of the slot. 
     
     
       3. The method according to  claim 1 , wherein, during the step of introducing the electrical conductors, the insulating film is pushed to a bottom of the respective slot by the electrical conductors. 
     
     
       4. The method according to  claim 1 , wherein, during the step of introducing an insulating film, the insulating film is introduced as far as a bottom of the slot. 
     
     
       5. The method according to  claim 1 , wherein, after the step of introducing the electrical conductor, the insulating film is folded so that it is located completely within the respective slot. 
     
     
       6. The method according to  claim 1 , wherein, after the step of introducing the electrical conductor there is a further step of then introducing a respective slot cover into the slot, wherein the slot cover covers the electrical conductors which were introduced into the slot. 
     
     
       7. The method according to  claim 1 , wherein the insulating film is introduced in the form of a slotted rosette. 
     
     
       8. The method according to  claim 1 , wherein, after introducing, the insulating film it is stiffened and parts which lie outside the slots are removed by a machining process. 
     
     
       9. A device for introducing electrical conductors into slots of a component, wherein the device has a number of slot-pushers for introducing electrical conductors into the slots and a number of guide elements arranged between the slot-pushers for laterally guiding the electrical conductors during their introduction, and the device is designed to carry out the method of  claim 1 . 
     
     
       10. The method according to  claim 1 , wherein the component is for an electric machine. 
     
     
       11. The method according to  claim 6 , wherein the introducing the receptive slot cover is performed after inserting the insulating film in the slot. 
     
     
       12. The method according to  claim 1 , wherein the component is a stator for an electric motor and the guide element moves radially. 
     
     
       13. The method according to  claim 1 , wherein there are a plurality of the guide elements, and there are a plurality slot-pushers for introducing electrical conductors into the slots; and wherein the guide elements are arranged between the slot-pushers for laterally guiding the electrical conductors during their introduction into the slots. 
     
     
       14. The method according to  claim 1 , wherein, during the step of introducing the insulating film, the insulating film is only introduced into the slot to such an extent that it is at a distance from a bottom of the slot;
 wherein, during the step of introducing the electrical conductors, the insulating film is pushed to the bottom of the respective slot by the electrical conductors; and 
 wherein the component is a stator for an electric motor and the guide element moves radially.